Those Adapters have a full-size HDMI Type-A connector on one side and a Micro/Mini HDMI Type-D/C connector on the other, they are usually used to connect cameras to HDMI devices with HDMI Male to Male Cable(not included).

Compatible with camcorders (Canon, Nikon, Sony, Panasonic, Olympus, Fujifilm), HDSLR cameras, Portable Gaming Consoles, Tablets, and other devices with Micro HDMI ports to a TV, PC, Laptop, Monitor, Projector with an HDMI type A connector. Check that your device has Mini HDMI, the mid-sized HDMI connector. An HDMI cable (sold separately) is required.

CHOSE THE RIGHT ONE
Micro HDMI Adapter
The Micro HDMI Adapter for connecting digital devices to HDTV or Projector with full-size HDMI ports. This adapter allows you easily connect micro-HDMI compatible devices to TVs, monitors, and other displays with full-sized HDMI outputs.

Mini HDMI Adapter
Easily adapts a standard male HDMI cable to an HDMI mini connector to ensure a high-quality, low-loss connection. Connects a tablet, digital camera, or video camera to an Ultra 4K TV (UHD TV), projector, or monitor with HDMI input. Compatible only with Mini HDMI devices.

Note: These adapters will NOT fit phones, tablets, or any device with Micro or Mini USB ports.